Dermatitis (red, inflamed, sore skin or a rash)

in dogs

Overview

Has your dog got red, inflamed, angry looking skin? Or do they have

a rash? We often call these symptoms ‘dermatitis’.

Skin problems can be very irritating and painful and can be caused by

many different things.

SEVERE DERMATITIS AROUND A DOG’S MOUTH.

Dermatitis should always be checked by a vet, it’s often something

that can be easily treated but could be a sign of something more

serious.

Symptoms to look out for

A rash, spots or pimples

Red, inflamed or sore skin

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Itchy skin

Hair loss (alopecia)

Dandruff (dry, flaky skin)

Oily skin

Smelly, weepy skin (pyoderma)

Discoloured skin (brownish as if dirty)

Causes

Fleas and other parasites

Fleas are a common problem in dogs. They cause itchy, red,

skin rashes, especially around the lower back.

Mange is caused by the scabies mite. These tiny insects cause

itchy, red and thickened with patchy hair loss. Mange can also

make people who handle the dog have itchy spots.

Demodex mites are tiny insects that normally live on a dog’s

skin without causing problems. If a dog is unwell or their

immune system isn’t working properly the mites cause

thickened, crusty skin and hair loss, especially on their head,

feet and around their eyes. Demodex is more common in

puppies than adult dogs.

Ringworm causes circular patches of red, raised, hairless, itchy

skin. Fortunately, ringworm is quite rare in dogs.

Allergies

Allergic skin disease causes itchy skin and rashes.

Food allergies often cause a rash and itchy skin.

Medication reactions can sometimes cause red, itchy skin and

a rash.

Severe allergic reactions can cause hives, rashes and

swellings anywhere on the body. Contact your vet ASAP if you

suspect your dog is having a severe allergic reaction – this is

an emergency.

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Skin infections

Bacterial infections often cause red, inflamed circular patches

on the skin that smell pungent.

Puppy pyoderma (juvenile eczema) is a common bacterial

infection in young dogs.

Hot spots (wet eczema or acute moist dermatitis) tend to

appear quickly and cause smelly, weepy, itchy skin.

Yeast infections may cause your dog to develop a sour smell

and a greasy coat.

Bruises

If your dog has developed a rash that looks like blood spots or

bruising it could be a sign of a blood clotting disorder. This is

something you need to see your vet about ASAP.

When to contact your vet

Skin problems can cause a lot of suffering, have your dog examined

by a vet as soon as you notice a skin problem.

You know your dog best. If they don’t have the symptoms listed

above but you are still concerned it’s always best to contact

your vet.

Published: August 2018

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